Bath-tub.



PATENTED MAY 29 B. H. SLOMAN.

BATH TUB.

APPLIOATION FILED APR.22,1906.

iogyen/e L 74 6/0 nz/an'u Y had therein to the UNITED. STATES PATENT orrion.

I Specification of Letters Patent.

Patented. May 29, 1906.

Application filed April 22, 1905. Serial N0. 266,863-

To all whom it may concern:

Beit known that I, EUGENE H. SLOMAN, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Bath-Tubs, of which the following is a specification, reference beaccompanying drawings. I 1

The invention consists in a bath-tub made of sheetmetal, in which the metal is put in a state of rest and free from internal strains, whereby it may be heated and porcelained without distortion, as more fully hereinafter described and shown in the drawings, in which I Figure 1 is a pers ective view of my improved bath-tub, an Fig. 2 is a vertical central section therethrough; y

In the present state of the art bath-tubs are made of cast metal and porcelained. The casting of so large a piece of such-thin metal and of such a shape is a'difiicult rocess, and many castings are defective an are lost in the rocess. of manufacture.

any attempts have been made to make bath-tubs of sheet metal, and large sums have been expended in such eflorts. Such a shape as a bath-tub can befpressed by hydraulic presses; but when so pressed the tub has internal strains, which when the tub cools or when the tub is reheated for applying porcelainv distorts it or throws it out of its true shape, renderin it useless for marketin purposes. Unti m tub was produce I am unaware of any s eet-metal bathtub which would retain its form in cooling, especially reheated sufficiently to apply a porcelain coating thereto.

In making my tub A, I preferably first shape it in a die-press to approximately the finished shape. The ordinary press, however, will leave wrinkles or corrugatlons in the tub at B, and there will remain many internal stresses or strains. This "partiallyshaped tub I then may put in a press in which the punch member is smaller than the finished article, and then by suitable mechanism roduce a rolling action upon the metal by the punch member. Such a rollerress is illustrated in the British patent to urdock, No.. 17,904 of .1905. The action of this roller-press is continued long enough to not only shape the tub to its final form, but also to eliminate the internal strainsthat is, put the metal at rest in its new form. When the metal has thus been put at rest in the shape of the finished tub, it may be reheated and porcelained in the ordinary manner of applylng porcelain, and such reheating and su sequent. cooling will not cause the tub .to .become distorted or misshapen.

Such a tub is much cheaper to manufacture than a cast-metal tub, is much lighter and stron er, and thus reducing freight and flan er of ireakagein shipment due to rough Whi Ie I have referred to the Murdock roller-press as the preferable device to use in finishing the tub and eliminatin the internal strains, any other device may i6 employed which will press 'or roll the tub into finished shape and put the metal in its new form in a state of rest-that is, free from internal stresses which will distort it in cooling or in reheating and cooling when applying the porcelain.

- What Iclaim as my invention is' 1. A bath-tub made from a sin le sheet of metal in which themetal is in such a state of rest that itcan be reheated without distortidn when cooled.

2. A porcelain-coated bath-tub in which I I the metal body is formed from a sheet of metal in such a state of rest that on reheatin it to 'applly'the porcelain it was not distorte when coo ed.

. In testimony whereof I afiix my signature in presence of two witnesses.

EUGENE H. SLOMAN.

Witnesses: JAsRBARRY, 1

- EDWARD D. AUL'L. 

